when i went to the experiment room from another experiment, my colleague had gone. i checked the computer and found she got back the signal strength on 400 unit. Great! she said is the NMR coil position.

But when i start to polarize, i tried microwave power 1.0W and 3.5W, nothing. am i the problem????

and i notice that my colleagues is measuring the thermal polarization by remote control.

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